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ប្រសិនបើអ្នកនៅពីក្រោយគេហទំព័រសូមប្រាកដថាដែន*.kastatic.org និង *.kasandbox.org គឺត្រូវបានចាក់សោរ។

មាតិកាសំខាន់

រំលឹកឡើងវិញពីការរបស់អាមេរិក

រំលឹកឡើងវិញនូវតម្លៃនៃកាក់អាមេរិកនិងព្យាយាមដោះស្រាយលំហាត់អនុវត្តន៍មួយចំនួន។

U.S. Coins

The most commonly used coins in U.S. money are quarters, dimes, nickels, and pennies.

Quarters

Quarters are worth 25 cents. Below is an image of the front and back of a quarter.

Dimes

Dimes are worth 10 cents. Below is an image of the front and back of a dime.

Nickels

Nickels are worth 5 cents. Below is an image of the front and back of a nickel.

Pennies

Pennies are worth 1 cent. Below is an image of the front and back of a penny.
Want to learn more about U.S. coins? Check out this video.

Counting coins

ចូរមើលឧទាហរណ៏ :
What is the total value of the coins below?
One quarter is 25 cents.
25 cents
A dime is 10 cents, and there are 2 dimes. Skip count by 10's two times from 25 cents:
25,35,45 cents
A nickel is 5 cents, and there are 2 nickels. Skip count by 5's two times from 45 cents:
45,50,55 cents
A penny is 1 cent, and there are 4 pennies. Count by 1's four times from 55 cents
55,56,57,58,59
The total value of the coins is 59 cents.

អនុវត្តន៏

លំហាត់ 1
What is the total value of the coins below?
  • ចម្លើយរបស់អ្នកគួរតែជា
  • ចំនួនគត់មួយដូចជាលេខ 6
  • ចំនួនទសភាគ ពិតប្រាកដ មួយដូចជា 0.75
  • ប្រភាគ សម្រួលរួច ដូចជា 3/5
  • ប្រភាគ មិនទាន់សម្រួលរួច ដូចជា 7/4
  • ចំនួនចម្រុះ ដូចជា 1 3/4
cents

Want to try more problems like this? Check out this exercise.